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Mechanical Operations

Mechanical Operations
Maximum size reduction in a ball mill is done by the, __________ action.

Cutting
Impact
Attrition
Compression

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Mechanical Operations
For spheres, the specific surface shape factor is given by

D/V
√(AD/V)
AD/V
A/V

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Mechanical Operations
Percentage of drum submerged in the slurry in case of rotary drum filter is

25
30
85
3

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Mechanical Operations
The main size reduction operation in ultrafine grinders is

Compression
Impact
Cutting
Attrition

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Mechanical Operations
Ribbon blenders are exclusively meant for

Non-flowing powder and thin pastes
Continuous mixing
Bath mixing
Blending miscible liquids

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Mechanical Operations
Which of the following is a coarse crusher?

Gyratory crusher
Tube mill
Toothed roll crusher
Smooth roll crusher

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